全球变暖对海洋浮游生物生长–产氧的影响与应对策略

Effects of Global Warming on the Growth-Oxygen Production of Marine Plankton and Coping Strategies

摘要: 本文研究在全球变暖的背景下，海洋浮游生物生长–产氧情况的变化趋势。基于浮游动植物与氧气的关系，用函数刻画相关物质流的循环与传递，得到恒温状态下三者的基础模型，接下来引入温度上升对其中各化学反应的影响，同时在原有模型的基础上加上一个空间扩散维度，并考虑生态系统对气候的负反馈作用，最终得到浮游生物–氧气–气温变化模型。用有限差分法将微分方程进行离散，并结合python编程对浮游植物、浮游动物、氧气浓度和上升温度这四者的关系进行求解，绘制数量变化曲线。模拟结果表明，近500年内，浮游生物与氧气的波动将趋于平缓，振幅逐渐减小，且整体有略微下降的趋势；与此同时，温度上升的幅度也趋于平缓，浮游生物与气温二者互相制约，使生态系统更加稳定。

Abstract: We consider the changing trends of marine plankton growth-oxygen production in the context of global warming in this paper. Based on the relationship between phytoplankton and oxygen, the cycle and transport of related material flows are characterized by functions, and the basic model of the three is obtained under constant temperature, and then the effect of temperature rise on each of the chemical reactions is introduced, and a spatial diffusion dimension is added on the basis of the original model, and the negative feedback effect of the ecosystem on the climate is considered, and the plankton-oxygen-temperature change model is finally obtained. Using the differential differentiation method of differential equations and combined with python programming, the relationship between phytoplankton, zooplankton, oxygen concentration and rising temperature is solved, and the quantitative change curve is plotted. The simulation results show that in the past 500 years, the fluctuations of plankton and oxygen will tend to be flattened, the amplitude will gradually decrease, and the overall trend will be slightly decreasing; at the same time, the amplitude of temperature rise will also tend to be flat, and the two will restrict each other, making the ecosystem more stable.